Feeding belt gluing system for solid adhesive tape gluing

Abstract

The utility model relates to the technical field of functional materials. A feeding belt gluing system for gluing solid rubber strips comprises a feeding belt for bearing the solid rubber strips, the feeding belt comprises a carrier belt made of biaxially oriented polypropylene, and the solid rubber strips are attached to the carrier belt at equal intervals; a corona layer is arranged on the contact surface of the carrier tape and the solid adhesive tape; the feeding disc is used for bearing a feeding belt, and the two positioning rotating shafts are further included; a feeding belt led out of the feeding disc passes through the lower portions of the two positioning rotating shafts respectively, the face, provided with the solid adhesive tape, of the feeding belt faces downwards, and the feeding belt is tensioned by the two positioning rotating shafts; a gluing head is arranged above the feeding belt between the two positioning rotating shafts, the gluing head comprises an electric telescopic rod with an up-and-down stroke, and the lower portion of the electric telescopic rod is connected with a pressing block for pressing the solid adhesive tape downwards. The feeding device has the beneficial effects that the feeding disc can be matched with the gluing head to continuously provide the solid adhesive tape, the gluing efficiency of the solid adhesive tape is improved, and the manual gluing cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of functional materials technology, specifically to solid adhesive strip technology. Background Technology

[0002] In the production of 3C electronic products, especially laptops, the small and complex structures between the aluminum alloy frame and plastic parts are generally bonded together using adhesives.

[0003] Most existing adhesives are AB-based mixtures, requiring customized adhesive path editing based on the product structure before applying the AB liquid adhesive using a dispensing machine. This process is time-consuming and labor-intensive. Furthermore, the height of the dispensing machine needle and the speed of the program can both affect the tensile strength of the finished product.

[0004] To address the numerous shortcomings of existing dispensing machines, a solid adhesive strip material has emerged. This solid adhesive strip can be directly formed into a one-time application strip according to the shape of the adhesive path. However, this type of adhesive strip cannot be used with the dispensing head of existing dispensing machines. Therefore, it is necessary to make partial modifications to the material supply method and the existing dispensing machine to ensure compatibility between the two and enable the dispensing of solid adhesive strips using a dispensing machine. Utility Model Content

[0005] The purpose of this invention is to provide a feeding belt glue application system for applying solid adhesive strips, so as to solve at least one of the above-mentioned technical problems.

[0006] The technical problem solved by this utility model can be achieved by the following technical solution:

[0007] A feeding belt adhesive application system for applying solid adhesive strips includes a material conveying system for conveying plastic parts that need to be adhesiveped. The material conveying system has a conveyor belt and also includes a feeding belt carrying solid adhesive strips. The feeding belt includes a carrier belt made of biaxially oriented polypropylene, on which solid adhesive strips are attached at equal intervals. The solid adhesive strips are adhesive strips used for bonding plastic parts.

[0008] The carrier tape has a release layer on both sides;

[0009] The release layer on the side of the carrier tape to which the solid adhesive strip is attached has a corona layer;

[0010] The adhesion between the solid adhesive strip and the corona layer is greater than the adhesion between the solid adhesive strip and the release layer on the back of the carrier tape.

[0011] The adhesion between the solid adhesive strip and the corona layer is less than the adhesion between the solid adhesive strip and the plastic part.

[0012] It also includes a reel that carries the feed belt, called the feed reel, on which the feed belt is wound.

[0013] It also includes a glue application system;

[0014] The glue application system includes a rotating shaft for assembling the feed tray, and also includes two positioning rotating shafts;

[0015] The feed belt extending from the feed tray passes under the two positioning shafts, with the side fitted with the solid rubber strip facing down, and is tightened by the two positioning shafts.

[0016] The feeding belt between the two positioning shafts is located above the conveyor belt of the material conveying system and is parallel to the conveyor belt below.

[0017] The glue application system also includes a glue application head, which includes an electric telescopic rod with up and down stroke, and a pressure block for pressing down solid glue strips is connected below the electric telescopic rod.

[0018] The electric telescopic rod is located above the position between the two positioning pivots.

[0019] In this design, biaxially oriented polypropylene (BOPP) is used as the carrier belt for the feed tape. BOPP has release layers with low surface energy on both sides, resulting in low adhesion between the release layer and the solid adhesive strip. Therefore, corona treatment is applied to the release layer on the side where the solid adhesive strip is attached to form a corona layer. This corona layer enhances the adhesion between the solid adhesive strip and the release layer. Thus, using BOPP as the carrier belt for the solid adhesive strip is advantageous because it prevents the solid adhesive strip from adhering to the back of the BOPP, thus avoiding application failure. Furthermore, when the solid adhesive strip adheres to the plastic part, the adhesion between them is greater than the adhesion between the solid adhesive strip and the corona layer, allowing the solid adhesive strip to be easily peeled off the carrier belt and retained on the plastic part.

[0020] This design also includes a glue application system. The carrier belt is led out from the feed tray and guided by two positioning shafts. At this point, the feed belt and the conveyor belt of the material conveying system are parallel and in the same direction, with the solid adhesive strip on the feed belt facing the plastic part on the conveyor belt. The glue application head includes an electric telescopic rod, with a pressure block connected below it. The pressure block presses the solid adhesive strip on the carrier belt firmly onto the plastic part. At this point, the adhesion between the solid adhesive strip and the plastic part is greater than the adhesion between the solid adhesive strip and the corona layer. Therefore, when the electric telescopic rod retracts, the carrier belt rises under the tension of the two positioning shafts, causing the solid adhesive strip to detach from the carrier belt and remain on the plastic part, thus achieving glue application onto the plastic part. Its advantages include that the feed tray can continuously supply solid adhesive strips in conjunction with the glue application head, improving the glue application efficiency and saving on manual glue application costs.

[0021] Furthermore, the glue application system also includes a reel with a carrier tape wound around it, called a carrier tape recovery reel; the carrier tape recovery reel is connected to a rotating power mechanism; the carrier tape recovery reel is located in front of the feed belt in the direction of travel.

[0022] In this design, the carrier tape recycling reel serves two purposes: firstly, it has a rotating power mechanism that can pull the feeding reel forward to provide the dispensing head with solid adhesive strips for dispensing; secondly, it recycles the empty carrier tape after the solid adhesive strips have been peeled off and transferred, preventing the disorderly stacking of empty carrier tapes without a tangled power mechanism that could lead to abnormal accidents. The recycled carrier tape can be reused to apply solid adhesive strips to form a feeding tape.

[0023] Furthermore, the carrier belt is provided with guide gear holes for correction on both sides of the feeding direction of the feed belt; at least one set of gears for correcting the deviation of the carrier belt is provided between the carrier belt recovery disc and the adjacent positioning shaft, which is called the correction gear; the correction gear cooperates with the guide gear holes of the carrier belt to guide the carrier belt forward without deviation.

[0024] In the above design, guide gear holes for correction are provided on both sides of the carrier belt, and at least one set of gears for correcting the deviation of the carrier belt is provided between the carrier belt recovery disc and the positioning shaft. The gear holes and gears can mesh and drive each other. The beneficial effect is that by guiding the meshing transmission between the gear holes and gears on both sides, the two sides can be kept moving forward synchronously, which can effectively prevent the feed belt from deviating.

[0025] Furthermore, the spacing between the solid adhesive strips on the carrier tape is 2.5–5 cm.

[0026] If the spacing between the solid adhesive strips on the carrier tape is too small, adjacent solid adhesive strips will rub against the plastic parts during application, affecting the application quality. On the other hand, if the spacing between the solid adhesive strips on the carrier tape is too large, it will increase the tape travel time and reduce the application efficiency. Therefore, an appropriate spacing can ensure the application quality while improving the application efficiency.

[0027] This invention uses biaxially oriented polypropylene to support solid adhesive strips. By utilizing the different surface energy of biaxially oriented polypropylene and the surface energy after corona treatment, the solid adhesive strips are attached to the corona layer. The beneficial effect is that when the feed belt wound on the feed tray is pulled out, the solid adhesive strips will not stick to the back of the carrier belt, but will always remain on the front side with the corona layer.

[0028] Guided by two positioning shafts, the feed belt is parallel to the conveyor belt of the material conveying system, with the conveying direction consistent. The solid adhesive strip on the feed belt faces the plastic part on the conveyor belt. The electric telescopic rod drives the pressure block to press the solid adhesive strip on the feed belt onto the plastic part, thus achieving adhesive application. The beneficial effect of the adhesive application system is that the feed tray can work with the adhesive application head to continuously provide solid adhesive strips, improving the adhesive application efficiency and saving on manual adhesive application costs. Attached Figure Description

[0029] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0030] Figure 1 This is a schematic diagram of the feed belt;

[0031] Figure 2 This is a cross-sectional view of the feed belt;

[0032] Figure 3 This is a schematic diagram of the glue dispensing mechanism.

[0033] Symbol explanation:

[0034] 1. Carrier belt; 2. Solid adhesive; 3. Positioning shaft; 4. Electric telescopic rod; 5. Feeding tray; 6. Carrier belt recovery tray; 7. Correcting gear; 11. Gear hole; 12. Corona layer. Detailed Implementation

[0035] To make the above-mentioned objectives, features and advantages of this utility model more readily understood, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0036] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0037] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0038] Furthermore, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in an embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0039] Reference Figure 1 , Figure 2 , Figure 3As shown, a feeding belt adhesive application system for applying solid adhesive strips includes a material conveying system for conveying plastic parts that need to be adhesiveped. The material conveying system has a conveyor belt and also includes a feeding belt carrying solid adhesive strips. The feeding belt includes a carrier belt made of biaxially oriented polypropylene, on which solid adhesive strips are attached at equal intervals. The solid adhesive strips are adhesive strips used for bonding plastic parts.

[0040] A corona layer is provided on the surface where the carrier tape and the solid adhesive strip contact; the adhesion between the solid adhesive strip and the corona layer is greater than the adhesion between the solid adhesive strip and the back of the carrier tape; the adhesion between the solid adhesive strip and the corona layer is less than the adhesion between the solid adhesive strip and the plastic part;

[0041] It also includes a reel that carries the feed belt, called the feed reel, on which the feed belt is wound.

[0042] It also includes a glue application system; the glue application system includes a rotating shaft for assembling the feeding tray, and two positioning rotating shafts;

[0043] The feed belt extending from the feed tray passes under the two positioning shafts, with the side fitted with the solid rubber strip facing down, and is tightened by the two positioning shafts.

[0044] The feeding belt between the two positioning shafts is located above the conveyor belt of the material conveying system and is parallel to the conveyor belt below.

[0045] The glue application system also includes a glue application head, which includes an electric telescopic rod with up and down stroke, and a pressure block for pressing down solid glue strips is connected below the electric telescopic rod.

[0046] The electric telescopic rod is located above the position between the two positioning pivots.

[0047] In this embodiment, biaxially oriented polypropylene (BOPP) is used as the carrier belt for the feed tape. BOPP film is colorless, odorless, tasteless, and non-toxic, and possesses high tensile strength, impact strength, rigidity, toughness, and good transparency. BOPP itself has low surface energy, resulting in low adhesion to the solid adhesive strip. Therefore, corona treatment is required on the side where the solid adhesive strip is attached to form a corona layer. This corona layer enhances the adhesion between the solid adhesive strip and the film.

[0048] Corona treatment utilizes high-frequency AC voltage (up to 5000-15000V / m) 2 Corona discharge is generated on the surface of biaxially oriented polypropylene film, forming low-temperature plasma. This plasma interacts with the film surface, generating a free radical reaction that leads to polymer crosslinking, roughening the surface and enhancing adhesion to solid adhesive strips.

[0049] Therefore, biaxially oriented polypropylene is used as the carrier feed belt for the solid adhesive strip. When the feed belt is wound in the feed tray, its beneficial effect is that the solid adhesive strip will not adhere to the back of the biaxially oriented polypropylene, resulting in the solid adhesive strip not facing the plastic part when applying the adhesive. When the solid adhesive strip is bonded to the plastic part, the adhesion between the two is greater than the adhesion between the solid adhesive strip and the corona layer, and the solid adhesive strip is easy to peel off from the carrier belt and remain on the plastic part.

[0050] This embodiment also includes a glue application system. The carrier belt is led out from the feed tray and guided by two positioning shafts. At this point, the feed belt and the conveyor belt of the material conveying system are parallel and in the same conveying direction, with the solid adhesive strip on the feed belt facing the plastic part on the conveyor belt. The glue application head includes an electric telescopic rod, with a pressure block connected below the electric telescopic rod. The pressure block presses the solid adhesive strip on the carrier belt firmly onto the plastic part. At this point, the adhesion between the solid adhesive strip and the plastic part is greater than the adhesion between the solid adhesive strip and the corona layer. Therefore, when the electric telescopic rod retracts, the carrier belt rises under the tension of the two positioning shafts, causing the solid adhesive strip to detach from the carrier belt and remain on the plastic part, thus achieving glue application onto the plastic part. Its advantages are that the feed tray can continuously provide solid adhesive strips in conjunction with the glue application head, improving the glue application efficiency of solid adhesive strips and saving on manual glue application costs.

[0051] Reference Figure 3 As shown, the glue application system also includes a reel for winding carrier tape, called a carrier tape recovery reel; the carrier tape recovery reel is connected to a rotating power mechanism; the carrier tape recovery reel is located in front of the feed tape in the direction of travel.

[0052] In this embodiment, the carrier tape recovery disc serves two purposes: firstly, after being connected to the rotating power mechanism, it can pull the feed tape in the feed tray forward to provide the glue applicator with solid adhesive strips; secondly, it can recover the empty carrier tape after the solid adhesive strips have been peeled off and transferred, preventing the disorderly stacking of empty carrier tapes without winding around the power mechanism from causing abnormal accidents. The recovered carrier tape can be reused to apply solid adhesive strips to form the feed tape.

[0053] Reference Figure 1 , Figure 3 As shown, the carrier belt is provided with guide gear holes for correction on both sides of the feeding direction of the feeding belt; at least one set of gears for correcting the deviation of the carrier belt is provided between the carrier belt recovery disc and the adjacent positioning shaft, which are called correction gears; the correction gears cooperate with the guide gear holes of the carrier belt to guide the carrier belt forward without deviation.

[0054] In this embodiment, guide gear holes for correction are provided on both sides of the carrier belt. At least one set of gears for correcting the deviation of the carrier belt is provided between the carrier belt recovery disc and the positioning shaft. The gear holes and gears can mesh and drive each other. The beneficial effect is that the meshing transmission between the gear holes and gears on both sides guides the synchronous forward movement of both sides, which can effectively prevent the feed belt from deviating.

[0055] The spacing between the solid adhesive strips on the carrier tape is 2.5 to 5 cm.

[0056] In this embodiment, if the spacing between the solid adhesive strips on the carrier tape is too small, adjacent solid adhesive strips will rub against the plastic parts during adhesive application, affecting the adhesive application quality. On the other hand, if the spacing between the solid adhesive strips on the carrier tape is too large, it will increase the tape travel time and reduce adhesive application efficiency. Therefore, an appropriate spacing can ensure adhesive application quality while improving adhesive application efficiency.

[0057] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments may be described, i.e., those features that are not relevant to the currently considered best mode for carrying out the present invention, or those features that are not relevant to implementing the present invention.

[0058] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those of ordinary skill in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A feeding belt glue application system for applying solid adhesive strips, comprising a material conveying system for conveying plastic parts requiring glue application, the material conveying system having a conveyor belt, characterized in that, It also includes a feed belt carrying solid adhesive strips, the feed belt including a carrier belt made of biaxially oriented polypropylene, on which solid adhesive strips are attached at equal intervals; Solid adhesive strips are adhesive strips used for bonding plastic parts; The carrier tape has a release layer on both sides; The release layer on the side of the carrier tape to which the solid adhesive strip is attached has a corona layer; The adhesion between the solid adhesive strip and the corona layer is greater than the adhesion between the solid adhesive strip and the release layer on the back of the carrier tape. The adhesion between the solid adhesive strip and the corona layer is less than the adhesion between the solid adhesive strip and the plastic part. It also includes a reel that carries the feed belt, called the feed reel, on which the feed belt is wound. It also includes a glue application system; The glue application system includes a rotating shaft for assembling the feed tray, and also includes two positioning rotating shafts; The feed belt extending from the feed tray passes under the two positioning shafts, with the side fitted with the solid rubber strip facing down, and is tightened by the two positioning shafts. The feeding belt between the two positioning shafts is located above the conveyor belt of the material conveying system and is parallel to the conveyor belt below. The glue application system also includes a glue application head, which includes an electric telescopic rod with up and down stroke, and a pressure block for pressing down solid glue strips is connected below the electric telescopic rod. The electric telescopic rod is located above the position between the two positioning pivots.

2. The feeding belt glue application system for solid adhesive strips according to claim 1, characterized in that, The glue application system also includes a reel with a carrier tape wound around it, called a carrier tape recovery reel; The carrier tape recovery tray is connected to a rotating power mechanism; The carrier tape recovery tray is positioned in front of the feed belt in the direction of its movement.

3. The feeding belt glue application system for solid adhesive strips according to claim 1, characterized in that, The carrier belt is also provided with guide gear holes for correction on both sides of the feeding direction of the feed belt; At least one set of gears for correcting the deviation of the carrier tape is also provided between the carrier tape recovery disc and the adjacent positioning shaft, which is called the deviation correction gear; The straightening gear, in conjunction with the guide gear hole of the carrier belt, guides the carrier belt forward without it deviating from its course.

4. The feeding belt glue application system for solid adhesive strips according to claim 1, characterized in that, The spacing between the solid adhesive strips on the carrier tape is 2.5 to 5 cm.

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